Home / 209,267.28-313,651.70-145,743.48

Finding the Fourth Proportional to 209,267.28, 313,651.70 and 145,743.48

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Solution

The fourth proportional to 209,267.28, 313,651.70 and 145,743.48 is: 218,441.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,267.28 : 313,651.70 = 145,743.48 : x
  2. Step 2: Convert to fraction form
    209,267.28/313,651.70 = 145,743.48/x
  3. Step 3: Cross multiply
    209,267.28x = 313,651.70 × 145,743.48
  4. Step 4: Simplify right side
    209,267.28x = 45,712,690,265.92
  5. Step 5: Solve for x
    x = 45,712,690,265.92/209,267.28
  6. Step 6: Final answer
    x = 218,441.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.